It is interesting to note how the strong rejection of homosexuality by most societies throughout history has disadvantaged the emergence of a very different reality. By Laurence Barnes The social taboo against science Pigeons, vultures, ibis, lizards, sheep, macaques, hyenas, flies, dragonflies and countless other animal species are challenging the notion that homosexuality is “unnatural”. Studies have shown that up to 85% of lesbian pairs are found in populations of western seagulls. Penguins have even struck up same-sex relationships in zoos in different parts of the world. As many as a quarter of black swans are homosexual. In lions, 8% of mating observed are among males, and in the case of dogs, numerous research studies affirm the existence of patterns of homosexual behaviour.Īs for birds, all species that form parental relationships do so, to a greater or lesser extent, with members of the same sex. Bonobos form matriarchal societies, where 60% of sexual relations occur between females.
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In the case of giraffes, 9 out of 10 couplings occur between males. In the case of American bison, polecats or elephants, both males and females have been observed courting and mating with others the same sex. By Ger Bosma Photos | Other animals with homosexual behaviour Pair of Canadian Geese (Branta canadensis) on the shore. The environment is what determines these changes, driving species to change their sexual and affective behaviours. These studies explore the idea of homosexual behaviour as an evolutionary response to environmental changes. This is one of the theories that reports the evolutionary advantage of homosexuality, but it is not the only one. This allows them to fertilise solitary females, while continuing with their same sex partners. In 1963, Lorenz stated that male mates are more likely to occupy a higher level within geese colonies. His research supports the idea that homosexuality is useful for the species. The biologist Kurt Kotrschal, following on from the studies of Konrad Lorenz, has devoted many years to studying these animals. In Canada, according to some sources, up to 30% of these mates are homosexual. They spend their lives with a single mate and only look for another if the first one dies. Giraffe Ithala KZN South Africa by Luca Galuzzi | Gay geese and evolutionary theory In other species, such as fruit flies and insects in general, homosexuality occurs because of their inability to differentiate between sexes. For example, in the case of dolphins, males use sex to bond with other males and form alliances. These behaviours were different for each species, but in most cases they were an advantageous, evolutionary mechanism. Nathan Bailey at the University of California, published in Trends in Ecology & Evolution, confirmed that examples of sexual behaviour between same-sex individuals could be found in all species of the animal kingdom. From primates to intestinal parasites.Ī decade later, a study conducted by Dr.
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He observed that 450 of these exhibited sexual intercourse, courtship, emotional bonds, partnership and even child-rearing behaviour between homosexual individuals.
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In 1995, zoologist Konrad Lorenz published a study in which he studied the behaviour of 1,500 animal species. 3 Other animals with homosexual behaviour.In fact, in some species, homosexuality represents an evolutionary advantage. In the animal kingdom there are many examples of homosexuality that completely dismantle the theories that associate these practices with a purely cognitive trait of human beings. A male is born with a predisposition to mate with a female, since the aim is the reproduction of the species. Homosexuality is something that has always been exclusively associated with human beings, their psyche and their behaviour. But what does unnatural really mean? The definition of the term is something that goes against natural or human laws, especially in relation to morality. When it comes to homosexuality, for many people the recurring idea is that it’s something unnatural. Next time you need to send your wishes to a loved one, you can do it with a Zoo Portrait animal! SHOP SHOP CARDS & POSTCARDS / £2.75 Now with color backgrounds! Printed on Heavyweight 240gsm matt fine art stock. PRINTS / £50.00 30x 30 cm Image + 5 cm white margin